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User Manual for CDR Refrigerators Beverage-Air
Rev. 02/26 Beverage-Air 13
Refrigeration service should only be attempted by a trained trade professional certied to work on R-290 systems.
Here are some critical service items.
This list does not qualify anyone to service the unit. It is a
reminder and checklist for the service tech. Keep these in
mind for R290 service:
• Wire nuts are NOT to be used when changing an
electrical part.
• The switches in this product are sealed, only exact
replacements may be used.
• The process tubes are to be used for service access.
• Cut out (with tubing cutter) refrigeration components
that are to be replaced. Do NOT un-braze.
• Because R290 can be vented into the air during
service, the venting MUST be in an area free from
ame or spark. It must be near an opened window or
door.
• A sign noting service of a system containing propane
must be attached to the unit during refrigeration
service.
• A combustible gas leak detector must be used to
inform anyone in the area when propane is present in
the air.
Other Information:
Evacuation: It is critical that a refrigeration system be
leak free and internally dry. A thorough evacuation with
a good vacuum pump with a micron gauge attached is the
only way to ensure that the system is dry and ready for a
charge of refrigerant.
Charging: The system is critically charged and the proper
type and amount MUST be weighed in.
Overcharge symptoms: Unit will cool properly but
the suction line temperature will be unusually cold.
Compressor run time will be longer than normal.
Undercharge symptoms: Long run time, poor cooling
and a hot compressor dome are the main symptoms of an
undercharge.
REFRIGERATION SYSTEM COMPONENTS:
COMPRESSOR: The CDRHC series of units have a single
hermetic compressor.
CONDENSER(S): The CDRHC units incorporate a
"maintenance free" condenser design in the refrigeration
system which reduces the need for the regular cleaning
process that n and tube condensers require. Besides
the savings in preventive maintenance costs, energy
expenses will be stable throughout long periods of
time since the condensers will remain "clean and
unobstructed".
EVAPORATOR: In the event it is believed that the unit has
had a "freeze up" condition due to operation of the unit in
high temperature or humidity conditions, the evaporator
can be inspected by removing the oor of the inside of
the unit. If the evaporator is frozen; it can be thawed by
emptying the cabinet of all product and powering the unit
o until the coil is clear.
CONDENSATION EVAPORATOR TRAY: When the
equipment operates, condensed water from the
environment is collected on the evaporator. During each
o-cycle, the water drains to the evaporator tray located
at the bottom of the unit where it is evaporated using the
heat from the refrigeration system.
SLIDING CONDENSING UNIT: The condensing unit can be
pulled out, sliding it approximately 16" to allow servicing
the condenser motor(s), compressor(s), and electrical
components. In order to service the condensing unit,
remove the two screws that hold the lower front grill
(one at each side). Remove the screws that hold the front
bracket that clasps the condensing unit and slide it gently
out to have access to the components you want to check.
Once completed, every component must be returned to
it's original location for proper operation.
LIGHTING: The lamp can be turned o with the switch
located at the left side of the upper section, near the lamp.
FOR THE SERVICE TECH - R-290 (REFRIGERATED UNITS ONLY)
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